Valve Clearance: Adjustments
VALVE CLEARANCE
ADJUSTMENT
1. DRAIN ENGINE COOLANT
2. REMOVE FR WIPER ARM LH
3. REMOVE FR WIPER ARM RH
4. REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY
5. REMOVE WINDSHIELD WIPER LINK ASSEMBLY
6. REMOVE COWL PANEL SUB-ASSEMBLY
7. REMOVE FRONT FENDER APRON SEAL RH
8. REMOVE FRONT SUSPENSION BRACE SUB-ASSEMBLY UPPER CENTER
9. REMOVE V-BANK COVER SUB-ASSEMBLY
10. REMOVE AIR CLEANER CAP SUB-ASSEMBLY
11. REMOVE EMISSION CONTROL VALVE SET
12. REMOVE INTAKE AIR SURGE TANK
13. REMOVE RADIATOR HOSE INLET
14. REMOVE IGNITION COIL ASSEMBLY
15. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY
16. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY LH
17. INSPECT VALVE CLEARANCE
a. Turn the crankshaft pulley, and align the timing notch with timing mark 0 of the No. 1 timing belt cover.
b. Check that the valve lifters on the No. 1 (IN and EX) are both loose.
If not, turn the crankshaft 1 revolution (360°) and align the mark as above.
c. Check the valves indicated in the illustration on the left.
(1) Using a feeler gauge, measure the clearance between the valve lifter and camshaft.
Valve Clearance (Cold):
(2) Record valve clearance measurements that are out of the specified range. These measurements will be used later to determine the size of the adjustment shim to be installed.
d. Turn the crankshaft 2/3 of a revolution (240°), and check the valves indicated in the illustration on the left.
(1) Using a feeler gauge, measure the clearance between the valve lifter and camshaft.
Valve Clearance (Cold):
(2) Record valve clearance measurements that are out of the specified range. These measurements will be used later to determine the size of the adjustment shim to be installed.
e. Turn the crankshaft 2/3 of a revolution (240°), and check the valves indicated in the illustration on the left.
(1) Using a feeler gauge, measure the clearance between the valve lifter and camshaft.
Valve Clearance (Cold):
(2) Record valve clearance measurements that are out of the specified range. These measurements will be used later to determine the size of the adjustment shim to be installed.
18. ADJUST VALVE CLEARANCE
a. Turn the camshaft so that the cam lobe faces upward.
b. Turn the valve lifter with a screwdriver so that the notches are perpendicular to the camshaft.
c. Using SST (A), press down the valve lifter and place SST (B) between the camshaft and valve lifter. Remove SST (A).
SST 09248-55040 (09248-05410, 09248-05420)
HINT:
^ Apply SST (B) at a slight angle on the side marked with "9" or "7" at the position shown in the illustration.
^ When SST (B) is inserted too deeply, it will get pinched by the shim. To prevent it from being stuck, insert it gently from the intake side at a slight angle.
d. Using a small screwdriver and magnetic finger, remove the adjusting shim.
e. Using a micrometer, measure the thickness of the removed shim.
f. Calculate the thickness of a new shim so that the valve clearance comes within the specified value.
Specified value (Cold):
Intake A = B + (C - 0.20 mm (0.0079 inch))
Exhaust A = B + (C - 0.30 mm (0.0118 inch))
g. Select a new shim with a thickness as close as possible to the calculated values.
EXAMPLE (Intake):
Measured valve clearance = 0.45 mm (0.0177 inch) 0.45 mm (0.0177 inch) - 0.20 mm (0.0079 inch) = 0.25 mm (0.0098 inch) (Measured - Specification = Excess clearance)
Used shim measurement= 2.80 mm (0.1102 inch) 0.25 mm (0.0098 inch) + 2.80 mm (0.1102 inch) = 3.05 mm (0.1201 inch) (Excess clearance + Used shim = Ideal new shim)
Closest new shim = 3.05 mm (0.1201 inch) Select No. 12 shim
HINT:
^ Shims are available in 17 sizes in increments of 0.05 mm (0.0020 inch), from 2.50 mm (0.0984 inch) to 3.30 mm (0.1299 inch).
^ Refer to adjusting shim selection charts.
h. Place a new adjusting shim on the valve lifter with the imprinted number facing down.
i. Press down the valve lifter with SST (A), and remove SST (B).
SST 09248-55040 (09248-05410, 09248-05420)
j. Recheck the valve clearance.
19. INSTALL CYLINDER HEAD COVER SUB-ASSEMBLY
20. INSTALL CYLINDER HEAD COVER SUB-ASSEMBLY LH
21. INSTALL IGNITION COIL ASSEMBLY
Torque: 8.0 Nm (82 kgf-cm, 71 inch lbs.)
22. INSTALL RADIATOR HOSE INLET
23. INSTALL INTAKE AIR SURGE TANK
24. INSTALL EMISSION CONTROL VALVE SET
25. INSTALL AIR CLEANER CAP SUB-ASSEMBLY
26. INSTALL VACUUM HOSES
27. INSTALL V-BANK COVER SUB-ASSEMBLY
28. INSTALL FRONT SUSPENSION BRACE SUB ASSEMBLY UPPER CENTER
Torque: 80 Nm (816 kgf-cm, 59 ft. lbs.)
29. INSTALL COWL PANEL SUB-ASSEMBLY
30. INSTALL WINDSHIELD WIPER LINK ASSEMBLY
31. INSTALL COWL TOP VENTILATOR LOUVER SUBASSEMBLY
32. INSTALL FR WIPER ARM LH
33. INSTALL FR WIPER ARM RH
34. ADD ENGINE COOLANT
35. CHECK FOR ENGINE COOLANT LEAKS